(19)
(11) EP 0 889 028 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
13.01.1999 Bulletin 1999/02

(43) Date of publication A2:
07.01.1999 Bulletin 1999/01

(21) Application number: 98115388.5

(22) Date of filing: 05.02.1996
(51) International Patent Classification (IPC)6: C07C 317/18, C07C 317/04
(84) Designated Contracting States:
DE FR GB IT NL

(30) Priority: 06.02.1995 US 384068
27.10.1995 US 549407

(62) Application number of the earlier application in accordance with Art. 76 EPC:
96905457.6 / 0808335

(71) Applicant: E.I. DU PONT DE NEMOURS AND COMPANY
Wilmington Delaware 19898 (US)

(72) Inventors:
  • Anolick, Colin
    Wilmington, DE 19806-4626 (US)
  • Petrov, Viacheslav Alexandrovich
    Hockessin, DE 19707-2401 (US)
  • Smart, Bruce Edmund
    Wilmington, DE 19807-1923 (US)
  • Stewart, Charles Winfield
    Newark, Delaware 19711-2314 (US)
  • Wheland, Robert Clayton
    Wilmington, DE 19807-1234 (US)
  • Farnham, William Brown
    Hockessin, DE 19707-2119 (US)
  • Feiring, Andrew Edward
    Wilmington, DE 19807 (US)
  • Qui, Weiming
    Wilmington, DE 19808-4360 (US)

(74) Representative: Freiherr von Wittgenstein, Arved, Dr. et al
Patentanwälte Abitz & Partner Postfach 86 01 09
81628 München
81628 München (DE)

 
Remarks:
This application was filed on 17 - 08 - 1998 as a divisional application to the application mentioned under INID code 62.
 


(54) Initiator for the copolymerization of tetrafluoroethylene and hexafluoropropylene


(57) The invention refers to new compounds of the formula R6R7CFSO2R8, wherein R6 is perfluoroalkyl, perfluoroalkyl containing one or more ether oxygen atoms, perfluoroalkoxy or perfluoroalkoxy containing one or more ether oxygen atoms, R7 is perfluoroalkyl or perfluoroalkyl containing one or more ether oxygen atoms, and R8 is perfluoroalkyl. The compounds are useful as initiators for the copolymerization of tetrafluoroethylene and hexafluoropropylene to yield amorphous polymers.





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